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Agusan River

River in Mindanao, Philippines

Summary

River in Mindanao, Philippines

Field	Value
name	Agusan River
name_other	Rio Grande de Agusan
image	File:Mighty Agusan.jpg
image_size	250px
image_caption	The Agusan River and Magsaysay Bridge in 2019
map	Agusan river watershed.png
map_caption	Agusan River drainage basin
pushpin_map	Mindanao mainland#Philippines
pushpin_map_caption	Agusan River mouth
subdivision_type1	Country
subdivision_name1	Philippines
subdivision_type2	Region
subdivision_name2
subdivision_type3	Province
subdivision_name3	Agusan del Sur
subdivision_type4	Cities/municipalities
subdivision_name4
length	349 km
source1	Mount Tagubud, Pantukan, Davao de Oro
source1_location	Davao del Norte
source1_coordinates
source1_elevation	1022 m
mouth	Butuan Bay
mouth_location	Butuan
mouth_coordinates
mouth_elevation	0 m
basin_size	11937 km2
tributaries_left
tributaries_right

The Agusan River is third longest river in the Philippines, located in the north-eastern part of Mindanao island, draining majority of the Caraga region and some parts of Davao de Oro. It is the country's third largest river (after the Cagayan River and Rio Grande de Mindanao) with a total drainage area of 11937 km2

Geography

The headwaters of the river are found in the mountains of Davao de Oro, near its border with Davao Oriental and east of Tagum. It flows through the wide Agusan River valley which measures 177 km from south to north and varies from 32 – in width. It finally drains into Butuan Bay at its mouth in Butuan.

One of the prominent features in the Agusan River basin is the presence of the Agusan Marsh covering a total area of 19197 ha. The marsh serves a flood retention basin for the Agusan River, cutting the high discharge of water causing flash floods in the lower reaches of the river. Aside from that, the marsh harbors unique and pristine habitats like the sago and peat swamps forest and is a home to endangered and endemic flora and fauna. As a consequence, it was designated a wildlife sanctuary by then-President Fidel V. Ramos in 1996.

Watershed

The Agusan River basin is divided into three sub-basins on the basis of topographic features: the upper Agusan River basin, the middle Agusan River basin, and the lower Agusan River basin. The upper Agusan River basin is the section from its headwaters in the mountains of Davao de Oro to Santa Josefa, Agusan del Sur to Veruela, Agusan del Sur, the middle Agusan River basin is the section of the river from Santa Josefa to Amparo, Agusan del Sur while the lower Agusan River basin is from Amparo to its mouth at Butuan.

References

(September 21, 2011). "Water Quality Management in the Context of Basin Management: Water Quality, River Basin Management and Governance Dynamics in the Philippines". Department of Environment and Natural Resources.
(July 24, 2018). "Longest Rivers In The Philippines". WorldAtlas.
Kundel, Jim. (June 7, 2007). "Water profile of Philippines". Encyclopedia of Earth.
(December 2004). "Technical Assistance To The Republic of the Philippines For A Master Plan For the Agusan River Basin". Asian Development Bank.
[[Mindanao#Plains. Plains of Mindanao]]

Wikipedia Source

This article was imported from Wikipedia and is available under the Creative Commons Attribution-ShareAlike 4.0 License. Content has been adapted to SurfDoc format. Original contributors can be found on the article history page.

rivers-of-the-philippines landforms-of-agusan-del-norte landforms-of-agusan-del-sur landforms-of-davao-de-oro butuan

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